some1 here knows if i can use STL and .NET framework togther and if i can what is the type of project in VS 2003 can do it? i have a working engine in c++ and i want to use it and to improve it with .NET

Not really, no. Combining C++ and .NET code is not an easy task, particularly in VS2003 (it gets a bit better in 2005).

It's possible in theory. But it's difficult and fairly pointless.

i used some frameworks commands with C++, win32 and STL (vector) and everything has fine.